Kill at least 5 opponents in under 10 seconds.

Drop in on an old friend

There is only one way in

Save the medical volunteers

Become the Bat

Complete story mode on Easy difficulty

Defeat the giant Titan Ivy plant

Ride Titan henchman and knock down 10 thugs (any play mode)

Solve 25% of Riddler challenges

Defeat two Titan Henchmen at once

Save Dr. Young from being killed by Victor Zsasz

Gain access to Arkham Mansion after it is locked down by the Joker

Defeat Bane